Delhi air quality dips beyond 'severe' due to dust storm
The CPCB recorded an AQI (air quality index) of 351, which falls in the ?very poor? category, on Tuesday. Photograph: (Others)
According to the Central Pollution Control Board data, the air quality in the national capital today deteriorated beyond the "severe" level because of a ground-level dust storm in western India.
According to reports, the dust storm has led to an increase in coarser particles in the air.
The CPCB data showed that the PM10 (particles with a diameter less than 10mm) level was beyond "severe" at 778 in Delhi-NCR area and 824 in Delhi particularly, leading to hazy conditions and limiting visibility.
"There was a ground-level dust storm in the western part of the country that increased drastically coarser particles in the air, causing a spike in pollution levels in Delhi," noted Gufran Beig, a scientist at the Centre-run System of Air Quality and Weather Forecasting and Research Institute.
"Such dust storms accompanied by high-speed winds (30-40 kmph) do not last too long due to which the air quality will return to normal by this evening," Beig added.
According to the CPCB data, the air quality index at several places in Delhi crossed the 500-mark. East Delhi's Anand Vihar area recorded an AQI of 891.
An AQI between 0-50 is considered 'Good', 51-100 'Satisfactory', 101-200 'Moderate', 201-300 'Poor', 301-400 'Very Poor', and 401-500 'Severe'.
(With inputs from PTI)